Commodity prices edged up on Tuesday but held to their
multi-year lows, sending global stocks to their lowest in more
than two years.

"There is a bit of a relief rally and there appears to be an
anaemic balance after yesterday's heavy selloff," said Adam
Sarhan, chief executive of Sarhan Capital in New York.

The S&P 500 and the Nasdaq composite index
have closed down for the past five sessions. The Nasdaq
Biotechnology Index and the S&P 500 health care index
fell for the seventh straight day.
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